... negative spot 负的电荷点 negative suction 吸入负压 negative suction head 负吸水头，负压头 ...
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negative suction head 真空吸入压头
negative suction system 负压抽吸装置
negative-pressure suction 负压抽吸
Negative pressure suction system 负压吸附系统
negative pressure of suction 抽放负压
negative-pressure warm-suction therapy 负压温吸理疗
·2,447,543篇论文数据，部分数据来源于NoteExpress
The key to produce this shallow gas is to use a set of negative suction technique besides that a series of measures for protecting the shallow gas-bearing formation must be adapted while drilling.
要把这类浅层气开采出来，除必须实施保护浅气层的钻井措施外，关键在于采用一套负压抽汲采气技术。
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